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The Effects of the Solubility of Artificial Fissures on Plaque pH

Department of Cariology, Endodontology, Pedodontology, Academic Centre for Dentistry Amsterdam (ACTA), Louwesweg 1, NL-1066 EA Amsterdam, the Netherlands;

View larger version (48K): [in a new window]   Figure 1. Examples of plaque pH profiles by depth and by time in grooves from 3 substrata: (A) dentin, (B) enamel, and (C) polyacrylate (Perspex) in seven-day-old in situ-grown plaque (subject A). Specimens were placed in pH 7 buffer. The pH was measured at 10-µm intervals throughout the buffer (depth, -0.3 to 0 mm) and plaque (depth, 0 to 0.7 mm) in the groove, and at regular time points before (time, -2 to 0 min) and after (time, 2 to 50 min) 10% glucose application (arrow).

View larger version (96K): [in a new window]   Figure 2. Microradiograph of a section cut from a dentin groove specimen after a seven-day in situ period (subject A), showing demineralization along the walls of the groove (arrow). Bar indicates 0.1 mm.